Question

omar grouped the terms and factored the gcf out of the groups of the polynomial (3x^3 - 15x^2 - 4x + 20). his work is shown.
step 1: ((3x^3 - 15x^2) + (-4x + 20))
step 2: (3x^2(x - 5) + 4(-x + 5))

omar noticed that he does not have a common factor. which accurately describes what omar should do next?

• omar should realize that his work shows that the polynomial is prime.
• omar should go back and regroup the terms in step 1 as ((3x^3 - 15x^2) - (4x + 20)).
• in step 2, omar should factor only out of the first expression.
• omar should factor out a negative from one of the groups so the binomials will be the same.

Explanation:

Answer:

Omar should factor out a negative from one of the groups so the binomials will be the same.